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Drakes Formation

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Drakes Formation
State Kentucky
Name Drakes Formation
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 80% dolostone (dolomite) (some of it silty),10% limestone, and 10% shale
Minor
Sedimentary > Clastic > Mudstone > Shalelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 80% dolostone (dolomite) (some of it silty),10% limestone, and 10% shale
Sedimentary > Carbonate > Limestonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 80% dolostone (dolomite) (some of it silty),10% limestone, and 10% shale
Comments in west-central Kentucky, thickness is 0-55 m.
References

Noger, M.C., compiler, 1988, Geologic map of Kentucky: sesquicenntennial edition of the Kentucky Geological Survey: U.S. Geological Survey and the Kentucky Geological Survey, scale 1:500,000.
NGMDB product
Counties Bullitt - Carroll - Casey - Clark - Estill - Fleming - Garrard - Henry - Jefferson - Lewis - Lincoln - Madison - Marion - Mason - Montgomery - Nelson - Oldham - Powell - Shelby - Spencer - Trimble - Washington